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Finding the Fourth Proportional to 73,509.86, 101,430.28 and 49,345.91

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Solution

The fourth proportional to 73,509.86, 101,430.28 and 49,345.91 is: 68,088.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,509.86 : 101,430.28 = 49,345.91 : x
  2. Step 2: Convert to fraction form
    73,509.86/101,430.28 = 49,345.91/x
  3. Step 3: Cross multiply
    73,509.86x = 101,430.28 × 49,345.91
  4. Step 4: Simplify right side
    73,509.86x = 5,005,169,468.15
  5. Step 5: Solve for x
    x = 5,005,169,468.15/73,509.86
  6. Step 6: Final answer
    x = 68,088.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.